Difference Between Annotations And Labels In Kubernetes
Annotations |
Labels |
---|---|
Attaches non-identifying metadata: Annotations are used to attach non-identifying metadata to the objects. Various tools that are build over Kubernetes use this metadata attached by annotations to perform actions or enhance the resource management. |
Attaches identifying metadata: Labels are used to attach identifying metadata to Kubernetes objects that Help in selecting, grouping, or filtering Kubernetes objects |
In annotations, keys contains of a name and an optional prefix |
in Labels, keys must have both – name as well as a prefix |
The metadata attached by annotations can be short or long and structured or unstructured. |
The metadata attached by Labels should be Short and unstructured |
Annotations store additional information like description, name ,version details etc. |
Labels stores information to Identify objects, Group objects, manage Kubernetes costs etc. |
How to Use Kubernetes Annotations?
Annotations are key-value pairs that are used to attach non-identifying metadata to Kubernetes objects. Various tools that are built over Kubernetes use this metadata attached by annotations to perform actions or enhance resource management. Labels and Annotations are used to attach metadata to Kubernetes objects. This makes annotations important for working with Kubernetes clusters. To learn more about Kubernetes cluster and its architecture refer to Kubernetes – Architecture.